A tubular stirred sterilization reactor

Abstract

The utility model discloses a pipeline formula stirring sterilization reactor, including pipeline formula reactor body, sterilization stirring vane, import size head and export size head, the pipeline formula reactor body is cylindrical, the sterilization stirring vane fixedly arranged in the inside of pipeline formula reactor body, and the both ends of pipeline formula reactor body are connected with import size head and export size head respectively, and the sterilization stirring vane is set up in spiral vane type, and the spiral channel is formed between the sterilization stirring vane and pipeline formula reactor body, is used for the flow channel of activated sludge. The utility model device realizes the microorganism's fusion cell wall breaking through the spiral vane of alloy material preparation, is applicable to various pipeline formula mixed sterilization reactor's sludge in situ reduction system of adopting, realizes the good sludge reduction effect while ensuring the effluent quality, still can through the import and export pressure difference evaluation equipment pollution situation, realizes the off -line cleaning of reactor body, can guarantee equipment realizes long -term high -efficient use.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater biochemical treatment technology, specifically relating to a pipeline-type stirred sterilization reactor. Background Technology

[0002] Sludge is a waste product generated during wastewater treatment. It is a highly complex heterogeneous substance composed of bacterial cells, organic debris, inorganic particles, colloids, and other components. Sludge typically has a strong odor and contains large amounts of toxic and harmful substances as well as pathogenic microorganisms. Sludge treatment accounts for a significant proportion of the investment in the entire wastewater treatment project. The size of the sludge treatment unit and the investment directly depend on the amount of sludge produced. Therefore, wastewater treatment plants have a pressing need for sludge reduction.

[0003] Currently, the more advanced in-situ sludge reduction technology aims to reduce sludge production during wastewater treatment processes. This primarily involves using ozone, alloy materials, and other methods to inactivate and disrupt the cell walls of microorganisms in the sludge return pipes, releasing intracellular substances from the activated sludge as nutrients for microbial decomposition, thus reducing sludge volume. However, this method has a short reaction time and generates significant resistance losses in the sludge return pipes.

[0004] Therefore, it is necessary to propose a stirred sterilization reactor with a simple structure, low operating pressure drop, and long reaction time to solve the problems of short effective residence time and high pressure drop resistance in the existing reactors. Utility Model Content

[0005] In view of the above problems, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a pipeline stirred sterilization reactor for in-situ sludge reduction system.

[0006] The objective of this utility model is achieved through the following technical solution: A tubular stirred sterilization reactor includes a tubular reactor body, sterilization stirring blades, an inlet reducer, and an outlet reducer. The tubular reactor body is cylindrical. The sterilization stirring blades are fixedly installed inside the tubular reactor body. The inlet reducer and outlet reducer are respectively connected to both ends of the tubular reactor body for connection to a sludge return pipeline. The sterilization stirring blades are arranged in a spiral blade shape, using a single spiral arrangement or a double spiral cross arrangement. A spiral channel is formed between the sterilization stirring blades and the tubular reactor body for the flow channel of activated sludge.

[0007] Furthermore, the two ends of the pipeline reactor body are provided with body connecting rings, the small end and the large end of the inlet reducer are respectively provided with inlet small end connecting ring and inlet large end connecting ring, and the small end and the large end of the outlet reducer are respectively provided with outlet small end connecting ring and outlet large end connecting ring.

[0008] Furthermore, the body connecting rings at both ends of the pipeline reactor body are fixedly connected to the inlet large-end connecting ring and the outlet large-end connecting ring respectively by bolt assemblies, while the inlet small-end connecting ring and the outlet small-end connecting ring are used to connect to the sludge return pipeline.

[0009] Furthermore, the length of the pipeline reactor body is 350~1200mm, and the sterilization stirring blades are set to the same length as the pipeline reactor body.

[0010] Furthermore, the outer diameter of the blade edge of the sterilizing stirring blade is the same as the inner diameter of the tubular reactor body, and the blade is fixed inside the tubular reactor body as a whole.

[0011] Furthermore, an inlet pressure gauge connector is provided on the inlet reducer, and an outlet pressure gauge connector is provided on the outlet reducer. A pressure gauge or differential pressure transmitter is provided on the inlet pressure gauge connector and the outlet pressure gauge connector.

[0012] The technical solution of this utility model has the following beneficial effects: 1. This utility model discloses a pipeline-type stirred sterilization reactor, which achieves cell fusion and cell wall disruption of microorganisms through spiral blades made of alloy materials. It is suitable for various in-situ sludge reduction systems that use pipeline-type mixed sterilization reactors, and achieves good sludge reduction effect while ensuring effluent quality.

[0013] 2. The novel sterilization stirring blade structure of this utility model organically integrates the contact sterilization function of alloy materials and the stirring and mixing function of spiral blades. The spiral turbulence of the returned sludge improves the contact reaction efficiency between activated sludge and sterilization materials, and the hyperboloid arc flow channel reduces the pressure drop of the reactor body. While reducing the pressure drop of the equipment, it also improves the effect of sludge sterilization and volume reduction.

[0014] 3. The stirred sterilization reactor of this utility model can assess the fouling status of the equipment by the pressure difference between the inlet and outlet, and can achieve offline cleaning of the reactor body by disassembling the large and small heads at both ends of the inlet and outlet, which can ensure the long-term efficient use of the equipment.

[0015] 4. The length of the stirred sterilization reactor body and the internal blades of this utility model can be freely adjusted and matched to meet the actual needs of different scale treatment systems. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a pipeline-type stirred sterilization reactor according to the present invention.

[0017] In the diagram: 1. Inlet reducer; 11. Inlet small end connecting ring; 12. Inlet large end connecting ring; 2. Inlet pressure gauge connector; 3. Pipeline reactor body; 31. Body connecting ring; 4. Sterilization stirring blades; 5. Outlet pressure gauge connector; 6. Outlet reducer; 61. Outlet small end connecting ring; 62. Outlet large end connecting ring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] refer to Figure 1 A tubular stirred sterilization reactor includes an inlet reducer 1, an inlet pressure gauge connector 2, a tubular reactor body 3, sterilization stirring blades 4, an outlet pressure gauge connector 5, and an outlet reducer 6. The tubular reactor body 3 is cylindrical. The sterilization stirring blades 4 are fixedly installed inside the tubular reactor body 3. The inlet reducer 1 and outlet reducer 6 are connected to both ends of the tubular reactor body 3 for connection to a sludge return pipeline. The sterilization stirring blades 4 are arranged in a spiral blade shape, using a single spiral arrangement or a double spiral cross arrangement. A spiral channel is formed between the sterilization stirring blades 4 and the tubular reactor body 3 for the flow of activated sludge.

[0020] This utility model discloses a pipeline-type stirred sterilization reactor, which is suitable for various systems that carry out in-situ sludge reduction treatment through return pipelines, and is especially suitable for the technical transformation of existing projects.

[0021] The pipeline reactor body 3 is provided with body connecting rings 31 at both ends, the small end of the inlet reducer 1 is provided with an inlet small end connecting ring 11 and an inlet large end connecting ring 12 respectively, and the small end of the outlet reducer 6 is provided with an outlet small end connecting ring 61 and an outlet large end connecting ring 62 respectively.

[0022] The body connecting rings 31 at both ends of the pipeline reactor body 3 are fixedly connected to the inlet large end connecting ring 12 and the outlet large end connecting ring 62 by bolt assemblies, respectively. The inlet small end connecting ring 11 and the outlet small end connecting ring 61 are used to connect the sludge return pipeline.

[0023] The main body 3 of the tubular reactor is of a cylindrical shape, with a diameter 1 to 2 sizes larger than the sludge pipe at the intended installation position to ensure sufficient flow area. Both ends are connected to the intended installation pipe through the inlet reducer 1 and the outlet reducer 6 respectively. The length of the straight pipe section of the tubular reactor main body 3 is designed according to the treated water volume and the contact area of the sterilizing stirring blade 4, and is usually between 350 mm and 1200 mm.

[0024] The sterilizing stirring blade 4 is designed as a spiral blade, with the outer diameter of the blade edge equal to the inner diameter of the tubular reactor main body 3, and can be integrally fixed inside the tubular reactor main body 3. The spiral channel formed by the sterilizing stirring blade 4 and the tubular reactor main body 3 serves as a flow channel for the activated sludge.

[0025] The sterilizing stirring blade 4 can adopt a single-spiral arrangement or a double-spiral cross arrangement, which can further increase the contact area between the activated sludge and the sterilizing stirring blade 4, and improve the effect of microbial sterilization and cell wall breaking.

[0026] The sterilizing stirring blade 4 is integrally cast from an alloy material with a smooth surface. The high-speed turbulent state formed by the spiral curved surface can strengthen the contact reaction between the activated sludge and the blade, and the streamlined shape can reduce the resistance loss caused by the addition of the reactor. Preferably, the alloy material of the sterilizing stirring blade 4 of the present utility model mainly comprises copper, zinc, nickel, and some rare earth elements.

[0027] Pressure gauges or differential pressure transmitters are installed on the inlet pressure gauge connection 2 and the outlet pressure gauge connection 5. By detecting the differential pressure change of the tubular reactor main body 3, the fouling and clogging condition of the sterilizing stirring blade 4 can be judged. By disassembling the inlet reducer 1 and the outlet reducer 6, the tubular reactor main body 3 and the sterilizing stirring blade 4 can be cleaned offline. Example 1:

[0028] A municipal sewage treatment plant has a designed daily treatment capacity of 15,000 m 3 , and the system adopts an improved A 2 O process, with the designed effluent meeting the Class 1A standard specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The schematic structural diagram of a tubular stirring and sterilizing reactor supporting this project is shown in Figure 1 , comprising: an inlet reducer 1, an inlet pressure gauge connection 2, a tubular reactor main body 3, a sterilizing stirring blade 4, an outlet pressure gauge connection 5, and an outlet reducer 6.

[0029] The diameter of the sludge return pipe of this sewage treatment plant is DN350mm, the designed diameter of the tubular reactor main body 3 is DN400mm, and the length of the tubular reactor main body 3 is 1800mm. A double-spiral sterilizing stirring blade 4 with a thickness of 5mm and an overall length of 1800mm is arranged inside.

[0030] Under normal system operation, the returned sludge enters the pipeline reactor body 3 through the inlet reducer 1 via the sludge return pump. The activated sludge is stirred and turbulently by the sterilizing stirring blades 4 made of alloy material. Microorganisms on the sludge surface are inactivated and their cell walls are broken down after contact with the sterilizing stirring blades 4. The effluent flows back to the inlet of the wastewater biological treatment system through the outlet reducer 6, achieving a reduction in activated sludge volume. After a period of operation, a differential pressure alarm is triggered by the differential pressure transmitters installed on the inlet pressure gauge connector 2 and the outlet pressure gauge connector 5. The inlet reducer 1 and the outlet reducer 6 are then removed by bolts, and the pipeline reactor body 3 and the sterilizing stirring blades 4 are flushed and cleaned using a high-pressure water gun. After cleaning, they are reassembled sequentially.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A pipeline-type stirred sterilization reactor, characterized in that, The reactor includes a tubular reactor body (3), sterilizing stirring blades (4), an inlet reducer (1), and an outlet reducer (6). The tubular reactor body (3) is cylindrical. The sterilizing stirring blades (4) are fixedly installed inside the tubular reactor body (3). The two ends of the tubular reactor body (3) are respectively connected to the inlet reducer (1) and the outlet reducer (6) for connecting to the sludge return pipeline. The sterilizing stirring blades (4) are arranged in a spiral blade shape, using a single spiral arrangement or a double spiral cross arrangement. A spiral channel is formed between the sterilizing stirring blades (4) and the tubular reactor body (3) for the flow channel of activated sludge.

2. The pipeline-type stirred sterilization reactor according to claim 1, characterized in that, The pipeline reactor body (3) is provided with body connecting rings (31) at both ends. The small end and the large end of the inlet reducer (1) are respectively provided with inlet small end connecting ring (11) and inlet large end connecting ring (12). The small end and the large end of the outlet reducer (6) are respectively provided with outlet small end connecting ring (61) and outlet large end connecting ring (62).

3. The pipeline-type stirred sterilization reactor according to claim 2, characterized in that, The body connecting rings (31) at both ends of the pipeline reactor body (3) are fixedly connected to the inlet large end connecting ring (12) and the outlet large end connecting ring (62) respectively by bolt assembly. The inlet small end connecting ring (11) and the outlet small end connecting ring (61) are used to connect the sludge return pipeline.

4. A pipeline-type stirred sterilization reactor according to claim 2, characterized in that, The length of the pipeline reactor body (3) is 350~1200mm, and the sterilization stirring blades (4) and the pipeline reactor body (3) are set to the same length.

5. A pipeline-type stirred sterilization reactor according to claim 2, characterized in that, The outer diameter of the blade edge of the sterilization stirring blade (4) is the same as the inner diameter of the pipeline reactor body (3), and the whole is fixed inside the pipeline reactor body (3).

6. A pipeline-type stirred sterilization reactor according to claim 2, characterized in that, An inlet pressure gauge connector (2) is provided on the inlet reducer (1), and an outlet pressure gauge connector (5) is provided on the outlet reducer (6). A pressure gauge or differential pressure transmitter is provided on the inlet pressure gauge connector (2) and the outlet pressure gauge connector (5).

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